Factors Responsible for Individual Differences in Stuttering-like Symptoms with Delayed Auditory Feedback in People Who Do Not Stutter: A Study on Brain Activity in the Frontal Cortex
| Project/Area Number |
25880024
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Single-year Grants |
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| Research Field |
Cognitive science
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| Research Institution | Kumamoto Health Science University |
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Principal Investigator |
SHIOMI Masashi 熊本保健科学大学, 保健科学部, 准教授 (60711215)
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| Project Period (FY) |
2013-08-30 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
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| Keywords | 遅延聴覚フィードバック / 個体差 / 筋活動量 / 脳血流量 / 眼球運動 / 吃音（様）症状 / 発話速度 |
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| Outline of Final Research Achievements |
Depending on subjects’ performance on a delayed auditory feedback (DAF) task, subjects were classified into two groups to analyze their voice, level of muscle activity and ocular motility, and brain blood flow: a group with remarkable stammering-like symptoms and a group with mild stammering-like symptoms. DAF involves recording one’s original speech and replaying it in a temporally delayed manner.
Our analysis revealed that in many experimental conditions, the group of patients with remarkable stammering-like symptoms under the DAF condition showed slowing down of speech speed. With respect to activity of the orbicularis oris muscle, activity of the upper left orbicularis oris muscle tended to increase only in patients with mild stammering-like symptoms under the DAF condition. Lastly, brain blood-flow velocity increased in the right frontal lobe (non-dominant side) in the group of patients with remarkable stammering-like symptoms.
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Report
(3 results)
Research Products
(2 results)
